ORLANDO, Fla. (AP) — The top prosecutor in Orlando said Thursday that he will review what led to the fatal shooting of a Chechen immigrant during questioning by the FBI and other agents over the man’s ties to one of the Boston Marathon bombing suspects.

State Attorney Jeff Ashton said he has received a preliminary report by the federal Department of Justice about its investigation into the death of Ibragim Todashev (IH’-bruh-heem TOH’-duh-shehv) last May.

Ashton says there is no schedule for when he will complete his review.

Todashev was killed while being questioned by FBI agents and police from Massachusetts and Florida. Officials originally said Todashev lunged at an FBI agent with a knife. They later said it was no longer clear what happened.

An investigation is being led by the FBI.

A spokesman for the FBI’s Tampa office referred all questions to the agency’s Washington office. A spokesman for the Washington office didn’t respond to an email inquiry.